Originally Posted by JLawrence08648
Calling the company, it has, copper, silver, and lead. They say it's safe for catalytic converters and synthetic oil. However they don't recommend it for cars with variable valve timing as Restore is highly detergent and possibly may loosen crud, sludge, screwing up the variable valve timing. They say the variable valve timing is very sensitive.
I have a feeling it won't be the "highly detergent" properties freeing something up that messes up the VVT. I have a feeling it will be the copper, sliver, and lead plugging it up. There would be no reason in the world to even consider Restore unless you had a vehicle on its last legs, burning and blowing oil with very little compression.